particular sal va dorl, brazil for the world cup. many of them might not realize they're headed into the murder capital of south america's biggest country. >> salvador is having terrible problems with drug gangs and violence. officials aren't just preparing the city for the moment, they're just trying to make it safe for visitors. here's cnn's shastas darington. >> fritters served up by smiling women in traditional dress. performers twisting through the air in mock fights. some of the many sights awaiting visitors to salvador, a world cup city along brazil's northeastern coast. unfortunately, so is this. a police blitz on buses coming to and from a nearby slum. male passengers are separated and searched for arms and drugs. then women's handbags are checked. at the end, a brief explanation.